Adjustable headlight-reflector.



J. R. PRATT.

ADJUSTABLE HEADLIGHT REFLEGTR.

APPLIOATION FILED JUNI: 12, 190e.

91, gfr?, Patented Mar. 16, 1909.

2 SEEETS*SHEET l.

my anollmu 4 J. R. PRATT.

ADJUSTABLE HEADLIGHT REFLBGTOR.

y APPLIOATION IILBD .TUNE l2, 1908.

Patented Mar. 16, 1909. SHEETS-SHEET 2.

ant-num,

-i'i'cation oEErcE,

JAMES E. PRATT, oEDENIsoNgTExAs.

ADJUSTABLE HEADLIGHT-REFLECTOR.

Denison, ifn the county of Grayson and State' of Texas, have invented new and useful Improvements in Adjustable Headlight Reilectors, of which the following is a speci- This inventionrelates t'o head-lights for locomotive engines and more particularly tol an adjustable reflector vvso designed as to permit the rays of light to be directed in a true' line in front of a locomotive.

The' invention has for-one of its objects to improve and simplify the construction and operation of apparatus of this character so as .to be comparatively simple and inexpensive to manufacture, reliable and efficientin use, and readily manipulated to obtainI an accurate adj ustmef t.

`Another objc :t ofthe invention is the provision of a supporting means for a reflector intended for use, in connection with electric arc lights and: so designed as to permit of adjustment of the reflector to the right or left, or up or down, as required, while substantially maintaining the arc of the lamp at the focal center of the reflector.

lith these objects in v'iew and others, as will appear as thedescription proceeds, the linvention comprises the various novel features of construction and arrangement of' parts which will be more 'fully described ereinafter and set forth with `particularity in the claims appended hereto.

Iii* vthe accompanying drawings, which illustrate certain of the embodiments of the invention, Figure 1 is a perspective viewof the im roved reflector. Fig. 2 is a central vertica section of the front support. Fig. 3 is a side view showing a modified form of rear support. Fig. 4 is a horizontalsection on line 4 4, Fig. 3. Fig. 5 is a section on line 5,-5, Fig. 3. Fig.. 6 is a fragmentary sectional view showing a modified form of rear' support.

Similar reference characters are employed to designate corresponding parts throughout the views. j

Referring to the drawing, A designates the base plate for the head-light which has at its front a bracketl or support B on which rests the parabolic reflector C. This reflector is of ordinary construction. and has upper and lower o enings 1 and 2 into which the electrodes of the electric arc lamp extend.

s'peeiacauon or Letters Patent.

Application filed .Tune 12, 1908. Serial No. 438,188.

Patented March 16, 1909.

3 from which rises a saddle 4 to which the reflector is secured. j

The base piece 3 bears directly on the top of the base plate A and is adjustably secured thereto by a bolt 5 having a winged clamping nut 6. The base plate has a non-circular opening 7 for receiving the non-circular portion 8 of the shank of the bolt,'and the threaded portion 9 of the bolt passes through an arcuate slot 10 in the base piece 3, there being Washers 11 and. 12 on the bolt engaging the base plate' A and base piece 3, respectively. The slot 10 is struck from a center coincident with the axis on which the reflector is adapted to be tilted to the ,right or left, and the front support B can be ad- The front support Bconiprises a base piece justed to one side or the other around the 'center on which the reflector swings so as to accurately adjust the reflector to direct the rays of light in a true line in front of the locomotive.

Accordin@r to the construction shown in Fig. 1, the rear support comprises a standard 13 that h'as a horizontally extending arm 14 at its upper end, a-nd extending vertically through this arm is a screw 115 that supports the rear part ofthe reflector and serves to raise or lower the latter and also as a pivot on which the reflector is turned to right or left. On thisscrew are nuts 16 and 17 that engage respectively the top and bottom sides of the arm 14 and which are adapted to be manipulated to raise or lower the screw. On the upper end of the screw is a head 18 on which rests a rearwardly-extending horizontal stud 19 secured to the outside of the refiector and this stud is secured to the head 1.8 by a clamping piece 20 removably fastened to the head by screws 21.

Referring to the form shown in Fig. 3, the rear support comprises a bracket 22 on which is mounted a vertical screw 23, said screw having a forwardly-extending offset portion 24 and a/vertical portion 25 thelatter carrying a-yoke 26 that is suitably secured to the reflector. The screw 23 is disposed vertically in vline with the openings 1 and 2 of the reflector so that the axis on which the reflector is turned to the right or left is coincident with the focal center of the refiector and thefarc of the electric light is adjusted so as to coincide with such focal center. On the screw 23 are clamping nuts' 27 and 28 whereby the reflector can' be raised or lowered. lIn the form shown in Fig. 6, the reflector is supported at its rear by means of a bracket29 that has a horizontally-disposed eye 30 through which extends a clamping bolt 31, the said bolt being se curely fastened .to the base plate A of the head-light, and this boltV serves as a pivot on which the reflector turns 'and is located vertically in line with the focal axis of the reflector. On the bolts are'clarnpfng nuts 32, 33, for facilitating the vertical adjustment of the reflector. f

From the foregoing description, taken in connection with 'the accompanying draW-.

ings, the advantages of the construction and of the method of operation Will be readily alpparent to those skilled in the art 'to which tic inventionappertains, and While I .have described the principle of operationof the invention, together with the device Which I noW consider to be the best embodiment thereof, I desire to have it understood that the device shown is merely illustrative, and

. that such changes may be made when deranged to form a pivot on which the reflector sired as are within the scope. of the claims appended hereto.`

- Having thus described the invention, What I claim is 1. The combination of a .head-light ref-- flector, with front and rear supports on which the reflector is movably mounted, the rear support being vertically adjustable and aris adjustable in a horizontal plane.

2. The combination of a head-light re-v flector, an radjustable support on- Which the 'front of the reflector is supported, and a second adjustable support for the rear portion of the reflector. f

. 3. `The combination of a reflector, a base plate, an adjustable front support on the base plate for the reflector, :and an adjustable 'rear support on the base plate for' the Y reflector. A v

4. The combination of 'a reflector, a rear support for vertically and laterally adjusting the reflector, and a front support for the reflector.

5. The combination of a reflector, ay vertically adjustable member on Whichthere- 'flector is adapted to swing to one side or the other, and a support adjustable in a horizon- -tal plane aboutthesaid 'member as a center,

and on which the reflector is adapted to rest. 6. The lcornl ir1ation ofv a reflector, a sup porting member disposed in alinement With JAMES R.,1 RATT.`

yVitnesseS: s i

J. J. FAIRnANKs, WILL. WooDs.- 

